Hello.
I looked at the datasheet for the SEN-10245 (http://www.sparkfun.com/datasheets/Sens … sensor.pdf) and saw that it has a max excitation voltage of 10 V. When you put four of the SEN-10245 sensors in a Wheatstone bridge configuration, does the max excitation voltage across the bridge configuration increase beyond 10 V (because of there being additional load sensors)? If so, what would this new max excitation voltage be?
Do you think there is some advantage to using voltages higher than the standard 3.3 to 5V, for a bridge of those sensors?
What amplifier are you planning to use?
I was thinking that it would allow me to have a wider voltage output from my sensors, but I’ve just recently learned about how it is desirable for an ADC to share its voltage with the Vexcitation, and think your point about standard 3.3 and 5 V may be a better path to take.
I haven’t chosen my amp yet.
Ratiometric conversion is indeed a key consideration, as supply and reference voltage variations cancel.
It is hard to beat the HX711 module.